The Sacrifice episode is now available free for PC players of Left 4 Dead and Left 4 Dead 2. To celebrate, Valve is selling both games on PC for less than Xbox 360 players will pay for the DLC alone.

If there was ever evidence to back up Gabe Newell's mention of Xbox Live as a train wreck, then this is it. While PC players are already getting up to their elbows in The Sacrifice for Left 4 Dead and Left 4 Dead, Xbox 360 Left 4 Dead 2 owners are patiently awaiting to pay 560 Microsoft points ($7) for the privilege. That's pretty painful.

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But not nearly as painful as the fact that in honor of the release, Valve has discounted both PC games 66%. That's $6.79 apiece. It's only $10.20 for both games, or $20.40 for a four-pack of either title.

Oh, plus the Mac version of Left 4 Dead 2 goes live today as well, for the same low price.

I'd be completely furious about this if I weren't playing it on my PC.

Let's hear from our Xbox 360 Left 4 Dead 2 players then. How do you folks feel about this?